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| 1 | NUMERICAL SIMULATION OF ROUND TO OVAL ROLLING PROCESS显示文摘Three dimensional thermal-mechanical coupled elasto-plastic FEM has been used for simulation of round to oval single pass rolling. The analysis was conducted using MARC/AUTOFORCE1. 2 code. The material is assumed to be elasto-plastic and it obey the Von Mises yield criterion and Prandtl- Reuss rule. Deformation of the workpiece is simulated in a step-by-step manner,updating the coordinates of material points and the property after each step, so that both nonsteady-state and stendy-state deformation can be simulated. The heat transfter between the workpiece, the rolls, and enviroment and the heat generation due to plastic work and friction force, are considered in the analys- is.Predicted the deformation shape of the workpiece, distributions of strains, stresses, strain rates and temperatures, roll-separating force and roll torque are presented. | Y. W. Wang, Y. L. King, D. H. Yuan, S. G. Liu and Z. Y. Yu 1 ) University of Science and Technology Beijing, Beijing 100083, China 2) Daye Special Steel Co., Huangshi 435001, China | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，2： | 27 |
| 2 | Geographical distribution of red and green Noctiluca scintillans显示文摘The dinoflagellate Noctiluca scintillans is one of the most important and abundant red tide organisms and it is distributed world-wide. It occurs in two forms. Red Noctiluca is heterotrophic and fills the role of one of the microzooplankton grazers in the foodweb. In contrast, green Noctiluca contains a photosynthetic symbiont Pedinomonas noctilucae (a prasinophyte), but it also feeds on other plankton when the food supply is abundant. In this review, we document the global distribution of these two forms and include the first maps of their global distribution. Red Noctiluca occurs widely in the temperate to sub-tropical coastal regions of the world. It occurs over a wide temperature range of about 10°C to 25°C and at higher salinities (generally not in estuaries). It is particularly abundant in high productivity areas such as upwelling or eutrophic areas where diatoms dominate since they are its preferred food source. Green Noctiluca is much more restricted to a temperature range of 25°C-30°C and mainly occurs in tropical waters of Southeast Asia, Bay of Bengal (east coast of India), in the eastern, western and northern Arabian Sea, the Red Sea, and recently it has become very abundant in the Gulf of Oman. Red and green Noctiluca do overlap in their distribution in the eastern, northern and western Arabian Sea with a seasonal shift from green Noctiluca in the cooler winter convective mixing, higher productivity season, to red Noctiluca in the more oligotrophic warmer summer season. | P. J. HARRISON K. FURUYA P. M. GLIBERT J. Xu H. B. LIU K. YIN J. H. W. LEE D. M. ANDERSON R. GOWEN A. R. AL-AZRI A. Y. T. HO | 2011 | Chinese Journal of Oceanology and Limnology2011，29，4： | 8 |
| 3 | Evaluation of combination gene therapy with PTEN and antisense hTERT for malignant glioma in vitro and xenografts显示文摘 | You, Y. P. Geng, X. Z. Zhao, P. FU, Z. Wang, C. Z. Chao, S. W. Liu, N. Lu, A. L. Gardner, K. Pu, P. Y. Kong, C. S. Ge, Y. Judge, S. I. V. Li, Q. D. Q | 2007 | 南京医科大学学报(自然科学版)2007，27，5： | 6 |
| 4 | IMPROVEMENT OF MECHANICAL PROPERTIES OF MARTENSITIC STAINLESS STEEL BY PLASMA NITRIDING AT LOW TEMPERATURE显示文摘一系列实验被执行在 AISI 420 马氏体的不锈钢的机械性质上学习低温度血浆 nitriding 的影响。血浆 nitriding 实验在 25%N2+75%H2 空气借助于搏动 DC 的血浆在 350 ° C 为 15 h 被执行。微观结构,阶段作文,和剩余强调 nitrided 层的侧面被光显微镜学和 X 光检查衍射决定。nitridied 表面的微坚硬侧面也被学习。疲劳生活,滑动穿,并且侵蚀穿未经治疗的标本的损失,血浆 nitriding 标本根据一旋转把疲劳测试者,弄弯被决定 ball-on-disc 穿测试者,和一个稳固的粒子侵蚀测试者。350 ° C nitrided 表面被 -Fe3N 和α N 统治的结果表演,它是使过饱和氮固体答案。他们有高坚硬和心学稳定性。那么低温度血浆 nitriding 不仅增加表面坚硬价值而且改进 wear 和侵蚀抵抗。另外,因为血浆 nitriding 在修改的层内生产剩余压缩应力, AISI 420 钢的疲劳限制能被血浆 nitriding 也在 350 ° C 改进。 | Y. T. Xi D.X. Liu D. Han Z.F. Han | 2008 | Acta Metallurgica Sinica(English Letters)2008，21，1： | 3 |
| 5 | A MODEL FOR NUMERICAL CALCULATION OF UNSTEADYTEMPERATURE FIELD显示文摘The model established in this paper for calculating the unsteady temperature field, in which physical parameters varies with temperatures, is simplified as compared with the classical one by defining the heat conductivity as function of temperature and dealing with the latent heat of phase transformation and boundary conditions. The results show that the probability of absolute error less 2℃ between the calculated and measured values in temperature field calculation reaches above 80%. | S. X. Wang, D. S. Zheng and Y. L. Liu 1) Department of Material Engineering, Luoyang Institute of Technology, Luoyang 471039, China 2) Luoyang Copper (Group) Co., Ltd, Luoyang, China | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，2： | 3 |
| 6 | MEASUREMENT AND APPLICATION OF PHYSICAL PARAMETERSIN UNSTEADY HEAT CONDUCTION显示文摘As far as the accuracy of calculating unsteady temperature field is concerned, it is very important to find the accurate physical parameters such as specific heat, thermal conductivity, latent heat of phase transformation and surface heat flux. The model for calculating H and Q is established in this paper. The measurement methods and data processing for physical parameters such as volume specific heat C, thermal conductivity k, volume latent heat of phase transformation c1 and surface heat flux are introduced The physical parameters of 1Cr18Ni9Ti and 45 steels and the surface heat flux for 1 Cr18Ni9Ti probe cooled in water,10% NaCl water and oil with different temperatures are measured, respectively. These data show that the probability of absolute error less than 2* C between the calculated and measured values in temperature field calculation reaches above 80% if using the above physical parameters, which provides a reliable technology basis for precise calculation of temperature field. | S. X. Wanng, D. S. Zheng, Y. L. Liu 1) Department of Material Engineering, Luoyang Institute of Technology, Luoyang 471039, China 2) Luoyang Copper (Group) Co., Ltd, Luoyang, China | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，2： | 3 |
| 7 | EVOLUTION OF MICROSTRUCTURES AND HARDNESS DURING CONTINUOUS THERMO-MECHANICAL PROCESSING OF 6201 ALUMINUM ALLOY显示文摘Continuous thermo-mechanical processing (CTMP) of 6201 aluminum alloy was simulated on Gleeble-1500. The deformed specimens were analyzed by the observation of TEM and the measurement of hardness. It was shown that rapid solid solution and aging treatment can be effectively combined in one procedure by the strain induced during CTMP. The deformation temperature is ranging from 540* C to 300* C, the hardness increases directly before the 6th pass followed by a slight drop, the amount of precipitates increases with the holding time after deformation. Uniformly distributed and stabilized Mg2Si precipitates, as well as dislocation substructure can be observed on deformed specimens which have been subsequently held at 300℃ for 60 seconds. | H. Zhang, Y. Y. Liu, D. S. Peng and C. K. Wang (Department of Materials Science and Engineering, Central South University of Technology, Changsha 410083, China) | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，2： | 3 |
| 8 | Hesperidin pretreatment protects hypoxia–ischemic brain injury in neonatal rat显示文摘 | Z. Rong R. Pan Y. Xu C. Zhang Y. Cao D. Liu | 2013 | Neuroscience2013，，： | 2 |
| 9 | Study on acyl migration in immobilized lipozyme TL-catalyzed transesterification of soybean oil for biodiesel production显示文摘 | Du, W. Xu, Y. Y. Liu, D. H. Li, Z. B. | 2007 | 中国生物学文摘2007，21，1： | 2 |
| 10 | Characterization of a Tembusu Virus Isolated from Naturally Infected House Sparrows ( Passer domesticus ) in Northern China显示文摘 | Y. Tang Y. Diao C. Yu X. Gao X. Ju C. Xue X. Liu P. Ge J. Qu D. Zhang | 2012 | Transboundary and Emerging Diseases2012，，2： | 2 |
| 11 | Use of Polyglycolic Acid Unwoven and Woven Fibers for Tendon Engineering in vitro显示文摘 | X. Wei P. H. Zhang W. Z. Wang Z. Q. Tan D. J. Cao F. Xu L. Cui W. Liu Y. L. Cao | 2005 | 中国生物学文摘2005，19，10： | 2 |
| 12 | Characteristics of concentrations and chemical compositions for PM2.5 in the region of Beijing, Tianjin, and Hebei, China显示文摘 | P. S. Zhao F. Dong D. He X. J. Zhao X. L. Zhang W. Z. Zhang Q. Yao H. Y. Liu | 2013 | Atmospheric Chemistry and Physics2013，，9： | 2 |
| 13 | Deregulated expression of Notch receptors in human hepatocellular carcinoma显示文摘 | J. Gao Z. Song Y. Chen L. Xia J. Wang R. Fan R. Du F. Zhang L. Hong J. Song X. Zou H. Xu G. Zheng J. Liu D. Fan | 2007 | Digestive and Liver Disease2007，，2： | 2 |
| 14 | NUMERICAL SIMULATION OF MOLTEN POOL AND CONTROL STRATEGY OF KISS POINT IN A TWIN-ROLL STRIP CASTING PROCESS显示文摘Coupled turbulent flow, temperature fields of the twin-roll casting strip process were simulated by three-dimensional finite element method. Based on the heat balance calculation and using inverse methods between the simulations and real experiments, the relational models among casting speed, location, and coeffcient of heat transfer between molten metal and rolls in different regions are given. In the simulation, the calculated surface temperatures are in good agreement with the measured values. An on-line model of kiss point is derived by simulations and the geometry of molten pool, corresponding control strategy is also proposed. | G.M. Cao C.G. Li Z. Y. Liu D. Wu G.D. Wang X.H. Liu | 2008 | Acta Metallurgica Sinica(English Letters)2008，21，6： | 2 |
| 15 | EFFECT OF THE CONTROLLED ROLLING CONTROLLED COOLING ON STRENGTH AND DUCTILITY OF THE BAINITE MICRO ALLOYED ENGINEERING STEEL显示文摘The continuous cooling transformation of hot deformation austenite austenite of test steel and the effect of different processing schedules of controlled rolling and controlled cooling on the strength and ductility have been studied. The theory and the experiment base are presented for controlled rolling and controlled cooling of the SBL micro alloyed engineering steel. | Z. Li, G. D. Wang,X. H. Liu and C. Y. Ma The State Key Lab. of Rolling Technology and Automation, Northeastern Univarsity, Shenyang 110006 China | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，2： | 2 |
| 16 | Cervical Intervertebral Disc Degeneration Induced by Unbalanced Dynamic and Static Forces: A Novel In Vivo Rat Model显示文摘 | Yong-Jun Wang Qi Shi W W. Lu K C. M. Cheung Michael Darowish Tian-Fang Li Yu-Feng Dong Chong-Jian Zhou Quan Zhou Zhi-jun Hu Mei Liu Qin Bian Chen-Guang Li K D. K. Luk J C. Y. Leong | 2006 | Spine2006，，14： | 2 |
| 17 | MODELING OF STRAIN-INDUCED PRECIPITATION KINETICS IN Nb MICROALLOYED STEELS显示文摘On the basis of the thermodynamic calculation of precipitation and considering the effect of strain on the precipitation behavior and chemical composition (Si and Mn), the kinetics of precipitation from austenite has been investigated for different temperatures and strains. Nucleation theory and the solubility product of niobium, carbon, and nitrogen in austenite have been used to derive equations for the start time of precipitation as a function of temperature and composition. The value of n in Avrami equation was determined using the available experimental data from the published reports, which indicated that n is a constant independent of temperature and the end time of precipitation is a function of n and the start time of precipitation. The values of the start time and end time of precipitation predicted by the new model are compared with the experimental values and a good agreement was obtained between both. | X. G. Zhou Z. Y. Liu D. Wu Z. Li C.M. Li | 2006 | Acta Metallurgica Sinica(English Letters)2006，19，5： | 2 |
| 18 | Rapid compression of aluminum alloys and its relationship to thixoformability显示文摘 | T. Y. Liu PhD H. V. Atkinson P. Kapranos D. H. Kirkwood S. C. Hogg | 2003 | Metallurgical and Materials Transactions A2003，，7： | 1 |
| 19 | 查看详情显示文摘 | Zhan D. L Zhang Y Song Y. W Sun Y. Li Z.S. Han W.W. Liu J.S | | 0，，： | 1 |
| 20 | Polar organic tracers in PM2.5 aerosols from forests in eastern China显示文摘 | Wang W. Wu M. H. Li L. Zhang T. Liu X. D. Feng J. L. Li H. J. Wang Y. J. Sheng G. Y. Claeys M. Fu J. M | 2008 | 2008 (150)2008，，150： | 1 |
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